Combined cabinet and tray.



"W. B00TH.

COMBINED CABINET AND TRAY.

APPLI OATI ON FILED MAY 26 1911.. 1,015,664. I

"Patented Jln. 23,1912.

couulam muomum cm, WASHINGTON, n. c.

WILLIAM BOOTH, OF EAST LIVERPOOL, OHIO.

COMBINED CABINET AND TRAY.

Specification of Letters Patent.

Patented J an. 23,1912.

. Application filed May 26, 1911. Serial No. 629,673.

To all whom it may concern:

Be it known that I, WILLIAM Boo'rH, citlzen of the United States,residing at East Liverpool, in the county of Columb1ana and State ofOhio, have invented certain new and useful Improvements in CombinedCabinets and Trays, of which the following is a specification.

This invention has relation to combined cabinets and trays especiallyadapted for the use of dentists.

The object of the invention is to provide a cabinet which is of specialshape that it may be positioned upon a pedestal or other support closeto an operating chair, and which does not present obstruction orprojecting parts which might interfere with the movements of theoperator.

This cabinet is designed to hold the instruments and bits as aregenerally used in connection with a dent-a1 engine, and upon it ismounted a tray of china or porcelain which may be readily detached fromthe cabinet for cleaning and other purposes. This tray is also circularin plan, and the cabinet is provided at its upper edge with a peripheralbead of suitable material, within which the edge portion of the trayfits snugly. The tray is of especial design and is provided at its outerportion with an annular flange and within the said flange are locatedsets of ridges and depressions concentrically arranged one set withinthe other. The under side of the tray is provided with suitable bracingribs which are annular and concentrically arranged with their loweredges in the same plane so that they may rest squarely upon the top ofthe cabinet within the bead.

For a full understanding of the invention reference is to be had to thefollowing description and accompanying drawings, in which:

Figure l is a perspective view of the combined cabinet and tray; Fig.2is a transverse sectional view of the same cut on the line 2'2 of Fig.l; and Fig. 3 is a similar view out on the line 33.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the accompanying drawingsby the same reference characters.

The cabinet includes a base 1 which is adapted tobe positioned upon apedestal, bracket or other support (not shown). A block 2 is mounted atthe center of the uppersurface of the base 1. A shaft 3 is journaled atits lower end in the block 2, and means is provided for preventing thesaid shaft from moving longitudinally with relation to the block. Acabinet 4 is mounted upon the upper end of the shaft 3 and is circularin plan. The said cabinet 4 is provided in its sides with slidingdrawers-5 which may be arrangedin anydesired mannerand which aredesigned to contain tools and instruments and parts thereof. The saidcabinet is also provided in its sides with hinged sections 6, upon theinner sides of which are mounted blocks 7 These blocks are provided withbores 8 which are inclined at acute angles to the inner faces of theblocks, and these bores are adapted to receive snugly the shank portionsof bits or similar instruments, indicated at 9. By reason of the factthat the bores 8 are disposed at acute angles to the surfaces of theblocks 7, the said sections 6 together with their blocks may be readilyswung to open or closed positions without danger of the said bitsfalling out of the said bores, and when the sections and blocks areswung to open positions the outer end portions of the bits are inclinedtoward the operator, so that the said bits may be readily withdrawn fromthe bores as they are to be used.

If desired the hinges of the sections 6 may be provided with springs sothat when the sections are swung to full open positions they will beheld so by gravity against the tension of these springs, but while thesections are being closed and as they move about half way to closedposition, the tension of the springs comes into play and willcompletelymlose the sections, should the operator neglect to do so. Thisis due to the fact that during the act of closing the center of gravityof the sections and blocks carried thereby is shifted with relation tothe hinges so that some of the weight is at the opposite sides ofvertical planes passing through the hinge pins, and therefore theshifting of th weight and the tension of the springs will effect thecomplete closing of the sections.

The top of the cabinet 4 is flat with the exception of an annular bead10 provided at its periphery which stands up above the plane of the topproper of the cabinet. This bead may be of heavy cord, rubber or anyother suitable material.

Resting upon the top of the cabinet 4: is a detachable tray 11. Thistray is formed from clay or metal or any other material that hasconsiderable Weight and which at the same time may be so treated thatits surfaces 'may be glazed in order that the tray may be removed andthoroughly cleaned.

As illustrated in the drawing the tray 11 is circular in plan and isprovided upon its upper side and in the vicinity of its periphery withan upstanding annular flange 12. Upon its under side the tray 11 isprovided with a series of annular ribs 13.,

These ribs are concentrically. arranged and one of them is in thevicinity of theperiphery of the tray and is adapted to fit snugly withinthe bead 10 provided at the top of the cabinet 4:. The lower edges ofthe ribs 13 are in the same plane, and consequently when the tray is inposition upon the cabinet the said ribs bear directly against the top ofthe cabinet and support the peripheral and central portions of the tray.These ribs are also desirable as a means for strengthening the traystructure for preserving its integrity while it is being handled ormoved and when it is not in position upon the cabinet.

Upon its upper side the tray 11 is provided with several series ofconcentrically arranged ridges and furrows 1 1, one series being withinthe'other and both series being within the annular flange 12 of thetray.'

The ridges and furrows of one series are approximately in radialalinement with the ridges and furrows of the other series with relationto the center. of the tray 11.

Therefore it will be seen that a combined cabinetand tray as described,when positioned in the vicinity of an operating chair,

presents no projecting pa'rtsor exsertions liable to interfere with thefree movement of an operator, at the same time the cabinet and tray maybe readily revolved upon the base 1 so that the drawers or hingedsections may be conveniently positioned by the operator. After theinstruments and tools have been used, either in the hand of the operatoror in conjunction with a dental engine, and priorto cleaning the same,they may be laid upon the tray 11 radially with relation thereto,whereby they will be received within the furrows and between the ridgesof the two sets thereof and will be prevented from rolling upon the trayas the said tray is turned. By providing means for so positioning thetools and instruments upon the tray the working ends of the said toolsand instruments will be toward the center of the tray, and consequentlyany drippings or' material carried by the said tools or instruments willcome in contact with the central portion of the tray and not the edgeportion thereof. Therefore the edge portion of the tray will not becomesoiled and consequently may be used by the operator for turning thecabinet and tray. The weight of the tray is sufficient to hold the samesecurely in position notwithstanding the fact that the tray may be usedas a means for turning the entire upper portion of the structure. Alsoduring such turning the bead 10 will prevent edgewise slipping of thetray with relation to the cabinet.

If from accident or other cause a tool or instrument is not properlypositioned upon the tray as above described, or from any other causeshould roll upon the top of the tray, it cannot roll off of the same forthe reason that the flange 12 will check its rolling movement as itapproaches the periphery of the tray.

As shown in the drawing the outer rib 13 is not exactly at the peripheryof the tray 11. Therefore there is an edge portion of the said tray thatprojects beyond the said rib, and this portion may be conveniently usedfor grasping the tray when it is desired to lift the same oif of thecabinet.

As hereinbefore stated, this tray is composed of a weighty material andis integral and its surface should be glazed or so treated that noharbor will be afforded for filth nor will it be possible for thematerial to absorb germs or the like. Thus when the tray is removed itmay be thoroughly cleansed and replaced, and the danger of transmissionor disease by contagion is eliminated.

Having thus described the what is claimed as new is:

A tray especially adapted to be used as a top for a cabinet comprising acircular body havingupon its under side and Within its rim an annularrib, said body also having upon its under side and within the firstmentioned rib a series of annular ribs concentrically positioned withrelation to the body and the first mentioned rib, all of the said ribshaving their lower edges in the same plane, said body having upon its upper side and within its edge an annular invention,

flange, said body also having upon its up per side and within the firstmentioned flange a'series of annular flanges concentrically positionedwith relation to the body and the first mentioned flange and :WILLIAMBOOTH. L s.]

Witnesses J, T. HERBERT, S. T. HERBERT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

